TEAMS Defaulting to Personal Account

Hi Everyone. Hoping someone has some insight. I have Office accounts for personal use and one through my employer. I can log in to my work account and see my Outlook, documents etc, but when I hit the Teams option it tries to sign me in on my personal account. The reason I'm using this option for Teams is because I get a constant "Something Went Wrong" error when I try to use the app and using through the browser is disabling my video. 

Any thoughts greatly appreciated (for info, I'm on a MacBook Pro running Catalina 10.15.7)

Cheers